Cooling element



FIG. 1 is a perspective view of a cooling element showing my new design;

FIG. 2 is a front elevation view thereof, the rear elevation view being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevation view thereof, the right side elevation view being a mirror image thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a cooling element, as shown and described. 